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Lin Fan, a doctor of science, specializing in mathematics, physics and chemistry, took a nap in the laboratory, woke up and traveled to ordinary villagers in a remote village of the Yong Dynasty. At the beginning, he also had a daughter-in-law who looked like a fairy. Use modern scientific knowledge to build workshops and factories to make a fortune; bravely fight against bandits and enemies, outwit corrupt officials, and become famous in the Yong Dynasty; enter the imperial edict and go to Beijing, fight off foreigners, and gain promotion to high officials. He was framed by a traitor and demoted to the southern border, and won the hearts of the people; he raised an army to defend against the enemy, captured the capital, and established his own country;